I used to think I was the strangest person in the world.

Feet, what do I need you for when I have wings to fly?

What is rational is real; and what is real is rational.

-- Georg Wilhelm Friedrich Hegel

My mother gave birth to twins: myself and fear.

-- Thomas Hobbes

Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind.

-- Bertrand Russell

I always felt that a scientist owes the world only one thing, and that is the truth as he sees it. If the truth contradicts deeply held beliefs, that is too bad. Tact and diplomacy are fine in international relations, in politics, perhaps even in business; in science only one thing matters, and that is the facts.

-- Hans Eysenck

I came to Russia knowing absolutely nothing.

-- Catherine II of Russia

I would rather call Weber the father of experimental psychology.

-- Wilhelm Wundt